[PATCH v2 0/3] Optimize the fast path of mas_store()

[Peng Zhang]

Add fast paths for mas_wr_append() and mas_wr_slot_store() respectively.
The newly added fast path of mas_wr_append() is used in fork() and how
much it benefits fork() depends on how many VMAs are duplicated.

Changes since v1:
 - Revise comment and commit log. [3/3]
 - Add test for mas_wr_modify() fast path. [1/3]

v1: https://lore.kernel.org/lkml/20230602075353.5917-1-zhangpeng.00@xxxxxxxxxxxxx/

Peng Zhang (3):
  maple_tree: add test for mas_wr_modify() fast path
  maple_tree: optimize mas_wr_append(), also improve duplicating VMAs
  maple_tree: add a fast path case in mas_wr_slot_store()

 lib/maple_tree.c      | 69 ++++++++++++++++++++++++++++---------------
 lib/test_maple_tree.c | 65 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 111 insertions(+), 23 deletions(-)

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2.20.1